JP4538012B2 - Web core take-up shaft - Google Patents

Description

  The present invention relates to a winding shaft for winding a web of plastic film, paper, foil film or the like around a core.

  As this type of core winding shaft, air-projecting core holding pins are distributed on the outer peripheral portion, and the loosely inserted core is held by pressing the core holding pin against the inner surface portion, or the outer peripheral portion is axially In addition to holding the loosely inserted core via the pressure contact of the core holding cylinder against the inner surface, the loosely inserted core is clamped from the shaft end portion ( What is tightened and held via a nut or the like is known (see, for example, Patent Documents 1 to 3).

These known web core winding shafts do not have any problem with the precise winding of the target web core, but the core is inserted from one end of the insertion / removal or the core winding web roll is removed. When leaving (removing), dust is generated due to the contact between the inner surface of the core and the outer peripheral portion of the winding shaft, which makes it difficult to improve the cleanliness of the core winding web roll.
JP-A-7-300259 Japanese Utility Model Publication No. 7-19257 Japanese Utility Model Publication No. 6-73018

  In view of the above-described problems, the present invention particularly extends the other end opposite to one end for inserting and removing the core and the core winding web roll with a gap in the bearing sleeve that holds the bearing at both ends. It is an object of the present invention to provide a web winding shaft with a bearing sleeve that can improve the cleanliness of the web.

  According to the present invention, as described in claim 1 of the present invention, the above-described problem extends with a gap between the vicinity of one end for insertion / removal of the core and the core winding web roll and the inside of the bearing sleeve. Each of the other end portions is provided with a dust suction port that can be opposed to the inner surface of the core and a dust guide outlet that opens in a gap between the bearing sleeve, and between the dust suction port and the dust guide outlet. A core winding of the web, which is provided with a dust guiding path that extends and is provided with a dust suction port that communicates with the bearing sleeve and that is connected to the dust suction collector while being connected to the bearing sleeve where the dust guiding outlet opens. Solve by take-up shaft.

  In the core winding shaft of the web according to the present invention, as described in claim 2, it is desirable to provide a plurality of dust suction ports at intervals around the shaft.

  The dust suction collector is connected to the dust suction port of the bearing sleeve through the dust suction collector itself or through joints attached to both the tip of the dust suction tube extending from the dust suction collector and the dust suction port. It can be carried out. Moreover, well-known vacuum cleaners can be used as a dust suction collector.

  According to the basic configuration of the core winding shaft of the web according to the first aspect of the present invention, when the core is inserted and when the core winding web roll is removed, the dust suction port is removed from the dust suction collector. By generating a suction air flow at the dust suction port through the dust guide outlet and the dust guide passage, the dust adhering to the inner surface of the core that passes through the dust suction port is transferred from the dust suction port to the dust guide passage and dust guide. The dust can be sucked and removed through the outlet and the dust suction port. Therefore, the cleanliness of the core winding web roll can be improved.

  Further, according to the plurality of installation configurations of the dust suction port according to claim 2, suction force can be applied to almost the entire inner surface portion of the core, and suction and removal of dust adhering to the inner surface portion of the core can be performed. Can be done almost completely.

  The drawing schematically shows the main part of a preferred embodiment of the core winding shaft of the web of the present invention, and the core winding shaft 11 is in the vicinity of one end where the core and the core winding web roll are inserted and removed. A plurality of dust inlets 12 are provided at equal intervals around the shaft, and at the other end of the bearing sleeve 15 holding the bearing 16 at both ends, a gap is opened at the opposite end in the diametrical direction. Two dust guide outlets 13 are provided, and two dust guide passages 14 extending between the dust suction port 12 and the dust guide outlet 13 are provided in the center, and the bearing sleeve 15 is provided with the dust suction port 13 and the bearing sleeve is provided with the bearing sleeve. 15 and a dust suction port 17 connected to a dust suction collector 19 via a dust suction pipe 18.

  The core take-up shaft 11 operates the dust suction collector 19 when inserting the core from one end and taking out the core take-up web roll, and sucks air from the dust suction port 12 to the inner surface of the core. By applying force, the dust adhering to the inner surface of the core is sucked and removed.

  In addition to the above, the core winding shaft of the web according to the present invention can be implemented in various forms such as one dust suction port and one dust guiding path, and is limited to the above-described form. It is not something.

1 is a schematic configuration diagram in which a part of a preferred embodiment of a core winding shaft of a web according to the present invention is cut away.

DESCRIPTION OF SYMBOLS 11 Core winding shaft 12 Dust inlet 13 Dust guide outlet 14 Dust guide path 15 Bearing sleeve 16 Bearing 17 Dust outlet 18 Dust suction pipe 19 Dust suction collector

Claims (2)

  Between the bearing sleeve and the dust inlet that can be opposed to the inner surface of the core at the vicinity of one end for inserting and removing the core and the core winding web roll and the other end extending through the bearing sleeve. A dust guide outlet that opens to the gap between the dust inlet and the dust guide outlet, and a gap between the bearing sleeve and the bearing sleeve where the dust guide outlet opens. A core take-up shaft for a web, which is provided with a dust suction port that communicates with a portion and is connected to a dust suction collector.   The core winding shaft for a web according to claim 1, wherein a plurality of dust suction ports are provided around the shaft at intervals.

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